Performance VX1 Pump precision engineered for maximum results. Performance VX1 is a premiere gentleman's enhancement system that consists of a motorized vacuum chamber, an airtight seal and a penis ring. Precision engineered vacuum chamber is clear for viewing progress measuring 2.59 inches wide, 11.25 inches in total length and accommodating 7.5 inches in penis length. The motorized pump provides vibrations and the pressure release valve allows comfortable removal. Bonus elastomer penis ring helps maintain erection and helps endurance.